APPARATUS AND METHODS

摘要

Apparatus comprising a light sensor configured to sense a received light signal, the light signal having data encoded therein, a solar cell configured to convert energy of the received light signal into electrical energy; and a processor. The processor is powered by the electrical energy converted by the solar cell, and is configured to: decode the data from the light signal received by the light sensor; and switch a device associated with the apparatus from a first state to a second state in accordance with the decoded data from the light signal.